Monitor stand



FIG. 1 is a bottom, rear and right side perspective view of a monitor stand showing my new design;

FIG. 2 is a top, front and right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown in the drawings depict portions of the monitor stand in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for a monitor stand, as shown and described. 